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https://github.com/OpenSpace/OpenSpace.git
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126 lines
4.5 KiB
C++
126 lines
4.5 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2022 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#include <openspace/util/boxgeometry.h>
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#include <ghoul/logging/logmanager.h>
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#include <string>
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namespace {
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constexpr const char* _loggerCat = "BoxGeometry";
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} // namespace
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namespace openspace {
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BoxGeometry::BoxGeometry(glm::vec3 size) : _size(std::move(size)) {}
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BoxGeometry::~BoxGeometry() {
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glDeleteBuffers(1, &_vBufferId);
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glDeleteVertexArrays(1, &_vaoId);
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}
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bool BoxGeometry::initialize() {
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// Initialize and upload to GPU
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const float x = _size.x * 0.5f;
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const float y = _size.y * 0.5f;
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const float z = _size.z * 0.5f;
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const GLfloat vertices[] = {
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-x, -y, z, // blue corner
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x, y, z, // white corner
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-x, y, z, // cyan corner
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-x, -y, z, // blue corner
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x, -y, z, // magenta corner
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x, y, z, // white corner
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-x, -y, -z, // black corner
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-x, y, -z, // green
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x, y, -z, // yellow corner
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-x, -y, -z, // black
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x, y, -z, // yellow
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x, -y, -z, // red
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x, -y, -z, // red
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x, y, z, // yellow
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x, -y, z, // magenta
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x, -y, -z, // red
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x, y, -z, // yellow
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x, y, z, // white
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-x, -y, -z, // black
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-x, -y, z, // blue
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-x, y, z, // cyan
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-x, -y, -z, // black
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-x, y, z, // cyan
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-x, y, -z, // green
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x, y, z, // white
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-x, y, -z, // green
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-x, y, z, // cyan
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-x, y, -z, // green
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x, y, z, // white
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x, y, -z, // yellow
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-x, -y, -z, // black
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x, -y, z, // magenta
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-x, -y, z, // blue
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-x, -y, -z, // black
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x, -y, -z, // red
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x, -y, z // magenta
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};
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if (_vaoId == 0) {
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glGenVertexArrays(1, &_vaoId);
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}
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if (_vBufferId == 0) {
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glGenBuffers(1, &_vBufferId);
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if (_vBufferId == 0) {
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LERROR("Could not create vertex buffer");
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return false;
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}
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}
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// First VAO setup
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glBindVertexArray(_vaoId);
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glBindBuffer(GL_ARRAY_BUFFER, _vBufferId);
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glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), &vertices, GL_STATIC_DRAW);
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glEnableVertexAttribArray(0);
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glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(GLfloat) * 3, nullptr);
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glBindVertexArray(0);
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return true;
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}
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void BoxGeometry::render() {
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glBindVertexArray(_vaoId); // select first VAO
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glDrawArrays(GL_TRIANGLES, 0, 6*6);
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glBindVertexArray(0);
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}
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} // namespace openspace
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